Minor quoting etc. fixes to lispref manual

* doc/lispref/tips.texi (Documentation Tips):
Distinguish more clearly among grave accent, apostrophe,
and single quote.
* doc/lispref/README, doc/lispref/buffers.texi:
* doc/lispref/commands.texi, doc/lispref/control.texi:
* doc/lispref/customize.texi, doc/lispref/display.texi:
* doc/lispref/elisp.texi, doc/lispref/files.texi:
* doc/lispref/frames.texi, doc/lispref/hash.texi:
* doc/lispref/help.texi, doc/lispref/internals.texi:
* doc/lispref/loading.texi, doc/lispref/makefile.w32-in:
* doc/lispref/markers.texi, doc/lispref/modes.texi:
* doc/lispref/nonascii.texi, doc/lispref/objects.texi:
* doc/lispref/os.texi, doc/lispref/positions.texi:
* doc/lispref/strings.texi, doc/lispref/syntax.texi:
* doc/lispref/text.texi, doc/lispref/tips.texi:
* doc/lispref/two-volume-cross-refs.txt, doc/lispref/windows.texi:
Use American-style double quoting in ordinary text,
and quote 'like this' when single-quoting in ASCII text.
Also, fix some minor spacing issues.

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/lispref/customize.texi b/doc/lispref/customize.texi
index 0d1b6fac8c0..f984dbe5870 100644
--- a/doc/lispref/customize.texi
+++ b/doc/lispref/customize.texi
@@ -842,7 +842,7 @@ symbols, and symbols are not treated like other Lisp expressions.
 
 @item (radio @var{element-types}@dots{})
 This is similar to @code{choice}, except that the choices are displayed
-using `radio buttons' rather than a menu.  This has the advantage of
+using ``radio buttons'' rather than a menu.  This has the advantage of
 displaying documentation for the choices when applicable and so is often
 a good choice for a choice between constant functions
 (@code{function-item} customization types).